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Isothermal and non-isothermal annealing of cold-rolled Al-Mn-Fe-Si alloys with different microchemistry states

Huang, Ke; Li, Yanjun; Marthinsen, Knut
Journal article
Submitted version
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Thermec-Ke_Huang_manuscript67409.pdf (Locked)
URI
http://hdl.handle.net/11250/2468659
Date
2014
Metadata
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  • Institutt for materialteknologi [1570]
  • Publikasjoner fra CRIStin - NTNU [19849]
Original version
Materials Science Forum. 2014, 783-786 174-179.   10.4028/www.scientific.net/MSF.783-786.174
Abstract
Investigation of the microstructural evolution of Al-Mn-Fe-Si alloys during annealing after cold rolling has been carried out. The effect of microchemistry state in terms of Mn in solid solution, constituents, size and volume fraction of dispersoids, introduced prior to cold rolling through different homogenization treatments, on microstructural evolution is compared during subsequent isothermal and non-isothermal heating experiments, with focus on the dependency of the amount solute (potential for concurrent precipitation) and pre-existing particles prior to deformation. It is clearly demonstrated that the actual kinetics and final microstructure are the result of a delicate balance between processing conditions and microchemistry state. In general, non-isothermal annealing treatments produce inhomogeneous microstructure, as compared to isothermal annealing. Moreover, more and finer particles (resulting from low-temperature homogenization) tend to hinder boundary motion, leading to even slower recrystallization kinetics and coarse non-equiaxed grains with a strong P texture component.
Publisher
Trans Tech Publications
Journal
Materials Science Forum

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